the air force is saying they're going to carry out an investigation into what went wrong along with the pentagon. >> we're now hearing from the church neighbor, the hero who shot and chased af the texas gunman. steve he said he exchanged gun fire, hitting the shooter twice. >> people at church that are friends of mine, family and every time i heard a shot, i knew that that probably represented a life. i was scared to death. i was. i was scared for me, i was scared for everyone of them and i was scared for my own family that just lived less than a block away. >> brave sole. after the gunman jumped in his